Professional paper

https://doi.org/10.46419/vs.55.3.5

Basic principles of sample size estimation in veterinary research

Ivan Vlahek ; Faculty of Veterinary Medicine University of Zagreb, Croatia
Velimir Sušić ; Faculty of Veterinary Medicine University of Zagreb, Croatia
Aneta Piplica ; Faculty of Veterinary Medicine University of Zagreb, Croatia
Anamaria Ekert Kabalin ; Faculty of Veterinary Medicine University of Zagreb, Croatia
Sven Menčik ; Faculty of Veterinary Medicine University of Zagreb, Croatia
Maja Maurić Maljković ; Faculty of Veterinary Medicine University of Zagreb, Croatia

Abstract

When planning research, it is essential to correctly determine the required sample size. Using a sample of inadequate size can result in the loss of time and money, or in ethical problems. Depending on the study design, there are different methods for calculating the sample size. The four critical factors in determining the required sample size are the level of statistical significance, power of the test, effect size, and data variability. The aim of this paper is to explain the basic principles of calculating sample size to veterinary scientists and experts.

Keywords

sample size; significance level; power of the test; data variability

Hrčak ID:

305882

URI

https://hrcak.srce.hr/305882

Publication date:

17.9.2023.

Article data in other languages: croatian

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